A 2-Mode Reconfigurable SSHI Rectifier with 3.2X Lower Cold-Start Requirement for Piezoelectric Energy Harvesting*

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Abstract

Synchronized switch harvesting on inductor (SSHI) rectifier has been verified as an efficient active rectifier to harvest kinetic energy in piezoelectric energy harvesting (PEH) system. Compared with passive rectifiers, active rectifiers including SSHI rectifier require a stable power supply to drive switches. However, when the system starts from the cold state, the required power supply is not available at first. For the active rectifiers, the active circuits work as a typical full bridge rectifier (FBR) until the stable power supply is built up. Unfortunately, a FBR cannot build up a stable power supply when the input open circuit voltage VOC is lower than the required power supply, resulting in disabled active rectifiers. This paper proposes a 2-mode reconfigurable SSHI rectifier design for low input VOC. By this method, the requirement for the input VOC is 3.2X lower than a FBR. The proposed system is designed in a 0.18µm process and post-layout simulations verify the cold start-up process under low VOC voltage.

Original languageEnglish
Title of host publicationICECS 2022 - 29th IEEE International Conference on Electronics, Circuits and Systems, Proceedings
Place of PublicationPiscataway
PublisherIEEE
Pages1-4
Number of pages4
ISBN (Electronic)978-1-6654-8823-5
ISBN (Print)978-1-6654-8824-2
DOIs
Publication statusPublished - 2022
Event2022 29th IEEE International Conference on Electronics, Circuits and Systems (ICECS) - Glasgow, United Kingdom
Duration: 24 Oct 202226 Oct 2022

Publication series

NameICECS 2022 - 29th IEEE International Conference on Electronics, Circuits and Systems, Proceedings

Conference

Conference2022 29th IEEE International Conference on Electronics, Circuits and Systems (ICECS)
Country/TerritoryUnited Kingdom
CityGlasgow
Period24/10/2226/10/22

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Cold start-up
  • voltage multiplier
  • piezoelectric energy harvesting
  • open-circuit voltage
  • SSHI rectifier

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